package com.cheng.HomeWork;

public class A1 {
    public static void main(String[] args) {
        B1 b1 = new B1(),b2 = new B1();
        b1.setN(3);
        b2.setN(5);
        int s1 = b1.getSum();
        int s2 = b2.getSum();
        System.out.println(s1+s2);

    }
}

class B1{
    int n;
    static int sum = 0;
    void setN(int n){
        this.n = n;
    }
    int getSum(){
        for(int i=1;i<=n;i++)
            sum = sum+i;
        return sum;
    }

}